ShareActionProvider，actionbar

ShareActionProvider，actionbar

menu/share_action.xml

<?xml version="1.0" encoding="utf-8"?><menu xmlns:android="http://schemas.android.com/apk/res/android"      xmlns:app="http://schemas.android.com/apk/res-auto">   <item android:id="@+id/menu_item_share"         android:title="Share"         app:showAsAction="ifRoom"         app:actionProviderClass="android.support.v7.widget.ShareActionProvider"/></menu>

MainActivity

package com.panjn.sharedemo;import android.content.Intent;import android.support.v4.view.MenuItemCompat;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.support.v7.widget.ShareActionProvider;import android.view.Menu;import android.view.MenuItem;import android.view.View;public class MainActivity extends AppCompatActivity {    private Intent shareIntent;    private ShareActionProvider mShareActionProvider;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        shareIntent = new Intent();        shareIntent.setAction(Intent.ACTION_SEND);        shareIntent.putExtra(Intent.EXTRA_TEXT,"panjn.jpeg");        shareIntent.setType("text/plain*");    }    @Override    public boolean onCreateOptionsMenu(Menu menu) {        getMenuInflater().inflate(R.menu.share_action,menu);        MenuItem item = menu.findItem(R.id.menu_item_share);        mShareActionProvider = (ShareActionProvider) MenuItemCompat.getActionProvider(item);        setShareIntent(shareIntent);        return true;    }    private void setShareIntent(Intent intent) {        if(mShareActionProvider != null && intent != null) {            mShareActionProvider.setShareIntent(intent);        }    }}